Improvement in hand-punches



Cttitd 331mm gama eine,

OMRI C. FOR-D,` OF BURLINGTON, ASSIGNOR TO HIMSELFAND N, C. STLES, OFM'IDDLETOWN, CONNECTICUT.

Letters Patent No.. 107,242, dated September 13, 1870.

IMPROVEMENT 1N HAND-PUNGHES- 4The ScheduIe referred to in these LettersPatent and making. partof the same.'

' rotary 'motion of fwhichis produced by means of a com'leeting-bar,lrunning from `the small, fixed pulley upon the`head otthe cutter to andfastened upon the opposite other half of the punch, and the movemeut ofclosing andopening the jaws of the punch "invoperating thesame, by whichrotary motion a clean and perfect perforation through the leather,paper, or othersimlar material to be perforated, is

made. To enable others skilled in the art to makeand use luy-invention,I will proceed to describe its construction and operation.

l constructmy punch in any of the known forms, except with reference-,to the cutter or perforator. This cutter or perforatoris so constructedand fixed in the jaw of 'the punch-that it has free play,and willrotate, being made in the usual shape and form of cutters in the oldstyle of hand-punches, and where the cutter or perforator comes to theoutside of the 4jaw through which it passes, it is `provided 'with aSmallfixed pulley, o f size to `correspond with the size of the punch,say from one-half to three-quarters of 'au inch in diameter, and upon,this` fixed pulley is fastened one end of a connecting-bal', at or nearthe edge of it, at a point far enough from the center of the pulley, andfar enough removed from the place where the opposite end of thisconnectingsbar is attached to the opposite other half of the punch, solthat the movement of closing and opening the jaws of the -punch willproduce a rotary motion of the cutter or perforator, by which rotarymotion a clean and perfectperforation is Iliade through paper, leather,or other similar material to be perforated, in the perforation of whichthe hand-punch is intended to be and 'is commonly used.

The advantage of my punch over the old style of hand-punches is this,that when using the old-fashion punch, it is necessary to give the samea twist after. `or while pressing the cutter or perforator through thematerial to be punched, to complete the perforation, and evenA thisrarely ever performs the operation periectly, while, by myimprovement,whle the cutter or perforator is passing through thematerial to be puneherLvit at the same time rotates, thus making and'cutting a perfect and clean hole through the material'.

The connecting-bar is-made of the saine metal as the punch, or may bemade of any other suitablema.- tei-iai, and is constructed with au elbowor joint, so as. to conform tothe shape'and movement of the handleslofthe punchin opening and closing the same. f The end of thisconnecting-bar, when it is fastened to the small fixedA pulley, ishooked in shape, as will be seen byg. N o. 2 ot'fthe drawing. This shapeis given to it` to produce as much rotary mot-ion as possible of thecutter or p'erf'orator.v Figure 1 of the drawing lrepresents ahand-punch with my improvement .thereto attached, and indicated4 by theletters B2B.

Letter A of the same figure indicates the small fixed pulley fastenedupon the head of the Acutter or perforator c, that passes tbroughand ismade toro` tate in the jaw 1), by means of connecting-bar -B' B and themovement of closing.,r and opening the jaws bb. i .l Figure 2 ofthedrawing represents the connecting-` bar and fixed pulley detachedfrom the punch, B' B being the connecting-bar, A being the fixed pulleyattached to the head of the-cutter or peiforator,-C being the pin orscrew that fastens the hooked end ofA the Connecting-bar to the fixedpulley, and thelctter' d being the elbow or joint inthe connecting-bar.

Letter E in fig. 1 isithe point where the connecting-bar is fastened tothe punch-handle, and, when thehandles arepressed together, the part Bofthe connecting-bar is drawn toward thehand that is operating thepunch, and the part B' 'being att-ached to lthe edge of the fixed pulleyA, as seen in fig. No.1,

and also' in fig. No. 2 thus causes the iixed pulley to turn, which,being iirmly fastened to the head ofthe cutter or perforator a, as seen'in iig. N 0,1, producesthe rotary motion of the cutter or perforator,which motion can be used in power-punches.

` N ow, what I claimas my invention, and desire to secure by LettersPatent, is

1. The cut-ter a, pivoted in one of the jaws b in such manner as to becapableof revolving in the jaw, as and for the purpose described.

2. The connecting-barsB B, in combination with the xed pulley A,substantially as described.

3. The vdevice described, consisting'of the punch, rotary cutter a,pulley A, and connccting-bars- B B, when the partsareconstiaictedfspecilically as described, for thcpurpose set'forth. v

' O. C. FORD.

Witnesses:

SAMUEL S. WARNER, S. A. RoBINso'N.

